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April 9, 1892


JAMA. 1892;XVIII(15):467. doi:10.1001/jama.1892.02411190027012

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Dr. Sicard, of Beziers, has reported to the Paris Academy of Medicine his series of original investigations regarding the spread of typhoid fever through the atmosphere. His plan was to have his typhoid patients breathe through tubes into water that had first been sterilized. Specimens of water thus treated were frequently found to yield the characteristic bacillus, under cultivation. This amount of success did not always attend Dr. Sicard's experiments, and this is not at all surprising in view of the fact that the typhoid bacillus has been found to be elusive, by the best of bacteriologists, under conditions that were strongly indicative of its presence. But Dr. Sicard's results were sufficiently uniform to warrant an inference that the expired breath of typhoid patients, like that of typhus fever, may serve as the channel for fever infection. For many years the infective properties of the expired breath of ship fever

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